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One-way transparent "holes" when importing STL file

Posted: Wed Jul 20, 2016 6:22 am
by jenswi
Hi!

I'm having trouble with importing an STL file into S3D. When imported, it creates things that look like holes, but can only be seen from one direction (see screenshots below). Because of these "holes" it goes crazy when slicing. Although, no holes of any sort can be seen in CAD. I have also tried healing the holes by merging all outlines into single model and stuff.

It happened to me once before a couple months ago as well, but then I eventually gave up and didn't print the model.

Any help is much appreciated! I have tried restarting and re-importing the file tons of times.
Skärmavbild 2016-07-20 kl. 11.52.09.png
Here's the weird hole!
Skärmavbild 2016-07-20 kl. 11.52.53.png
No hole to be seen from this side, except for the hole thats obviously part of the model.
Skärmavbild 2016-07-20 kl. 11.52.53.png (41.31 KiB) Viewed 2088 times

Re: One-way transparent "holes" when importing STL file

Posted: Thu Jul 21, 2016 5:55 am
by andrewk72
That means the surfaces are facing the wrong way. They talk about it here - https://www.simplify3d.com/support/tuto ... sh-errors/

Re: One-way transparent "holes" when importing STL file

Posted: Thu Jul 21, 2016 3:38 pm
by dkightley
You could try running the file through the cloud repair service: https://netfabb.azurewebsites.net/

There seems to have been quite a few issues discussed recently where .stl files appear not to be correctly sliced by S3D. I do hope there's not an outbreak of crappy design files!!!

Re: One-way transparent "holes" when importing STL file

Posted: Thu Jul 21, 2016 3:48 pm
by dorsai3d
dkightley wrote:I do hope there's not an outbreak of crappy design files!!!
Judging by some of the stuff I've seen on thingiverse, there's always been an outbreak of terrible STLs. It's a bad filetype even for meshes, and worse for trying to represent solids...

I wish STEP was a standard in 3D printing, but I don't have enough programming know-how to come close to helping that along.

Re: One-way transparent "holes" when importing STL file

Posted: Thu Jul 21, 2016 4:23 pm
by tenaja
dkightley wrote: I do hope there's not an outbreak of crappy design files!!!
There may be an outbreak in Geomagic Design (aka Alibre) use. It is notorious for flipped surfaces and garbage like that. Ask me how I know.